Some tests located require a connection to Oracle database to execute. To configure a connection, copy System.Data.OracleClient_test_default.dll.config.example to System.Data.OracleClient_test_default.dll.config and fill in the ConnectionString with appropriate Data Source. If no System.Data.OracleClient_test_default.dll.config is present, those tests will be ignored. To test .Net 2.0 profile, copy System.Data.OracleClient_test_default.dll.config to System.Data.OracleClient_test_net_2_0.dll.config and launch tests with PROFILE=net_2_0 . Scripts for populating the database are located in Test/System.Data.OracleClient.jvm (for their usage, consult Test/System.Data.OracleClient.jvm/readme.txt).